Variações na riqueza e na diversidade de espécies arbustivas e arbóreas no período de 14 anos em uma Floresta de Vale, Mato Grosso, Brasil

Abreu, Thiago Ayres Lazzarotti; Pinto, José Roberto Rodrigues; Mews, Henrique Augusto

doi:10.1590/s2175-78602014000100006

Cited by 12 publications

(15 citation statements)

References 47 publications

(66 reference statements)

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“…The S values in all three surveys were intermediate in relation to other seasonal semideciduous forest with known fire occurrences; Peixoto et al (2012) reported from 148 to 168 species, while Abreu, Pinto and Mews (2014) reported from 102 to 100 species under similar conditions, and the latter group was unable to identify alterations in the forest community after a fire event (as was seen in the present study).…”

Section: Discussioncontrasting

confidence: 73%

Spatial and temporal distribution of species diversity in semideciduous seasonal forests with occurrence of fire

Silva

Venturin

Carvalho

et al. 2017

RBT

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Abstract:The spatial and temporal distributions of vegetation can be influenced by edaphic and environmental factors as well as disturbances. The present study was undertaken to characterize the distribution and spatial dependence of species diversity in a fragment of semideciduous seasonal forest after a disturbance event by fire and to identify changes during natural regeneration. The fire, occurred in 1999, and surveys were undertaken in 2000, 2005 and 2014 in 26 geo-referenced plots (400 m²) distributed along two transects. The Fire Damage Index (FDI) in each plot was based on a scale from 0 to 5, and all of the arboreal individuals with diameters at breast height (DBH) ≥ 5 cm were identified in each plot. Species diversity was calculated using the Shannon index (H'), and species richness (S) was estimated using species accumulation curves; variations between the surveys compared based on the means and standard errors. The S, H' and FDI data were submitted to non-spatial exploratory and geostatistical analyses. After adjusting the semivariograms, the levels of spatial dependence were classified, and interpolation of the variables values were performed using ordinary kriging to characterize their spatial distributions in the form of maps. Spatial analysis was used to identify and characterize differences between the post-fire surveys in terms of the configurations of the arboreal community. The fire event influenced the spatial and temporal structures of the variables S and H'. These variables showed spatial dependence and aggregated distributions, with reduction in the distance under spatial influences and a uniformity of individuals distribution in the forest fragment at the different surveys. This research characterized the distribution and spatial dependence of the variables S and H' in a forest fragment after a fire event and the alterations in the arboreal community structure during natural regeneration. Rev. Biol. Trop. 65 (2): 525-534. Epub 2017 June 01.Key words: Atlantic Forest, Brazil, forest fragmentation, anthropogenic disturbance, long-duration study, spatial dependence, geostatistics.example, habitat degradation results in reductions of both forest cover and species diversity (Ribeiro, Martensen, Metzer, Tabarelli, Scarano, & Fortin, 2011) with serious implications for forest ecosystem functioning and organization (Silva-Matos, Fonseca, & Silva-Lima, 2005;Lima & Moura, 2008;Pereira, Filho, Eisenlohr, Miranda, & Filho, 2015). The spatial distribution of forest species is an interactive Forest fragmentation is one of the principal factors promoting forest degradation. In addition to generating forest mosaics at different regeneration stages, fragmentation favors the propagation of subsequent fires and other environmental disturbances that promote spatial discontinuity of forest composition (Amaral, Ferreira, Watzlawick, Longhi, & Sebem, 2013b). In the Atlantic Forest biome, for phenomenon involving competition, tree architecture, and the occurrence and availability of forest openings (Sanquetta,...

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Section: Discussioncontrasting

confidence: 73%

Spatial and temporal distribution of species diversity in semideciduous seasonal forests with occurrence of fire

Silva

Venturin

Carvalho

et al. 2017

RBT

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“…Regarding the number of species, the three groups had a forest-like pattern, with greater CL richness, followed by CS and P. Similar results were reported by Scipioni et al (2013) and Callegaro et al (2014) in the same forest type, where light-demanding climactic species retained larger proportions of individuals and species. The higher floristic representativity of these species was also observed by Abreu et al (2014), in a Semi-Deciduous Seasonal Forest located in the Chapada dos Guimarães National Park, who attributed this condition to canopy discontinuity due to the valley's rugged relief.…”

Section: Resultssupporting

confidence: 54%

Floristic Differentiation of a Deciduous Seasonal Forest Tree Stratum, Jaguari, RS, Brazil

et al. 2019

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This study aims at determining and differentiating the floristic groups of a Deciduous Seasonal Forest's arboreal component, located on the ridge of the Southern Plateau, in Southern Brazil. Individuals with diameter at breast height ≥ 5.0 cm were sampled in sixty-two plots measuring 10 m × 10 m, which were systematically installed in the forest. Three floristic groups were found: Middle Stage, including 54 species, with Casearia sylvestris as an indicator species; Advanced Stage, with 38 species and Pilocarpus pennatifolius as the indicator species; and Altered Forest, with 27 species and Apuleia leiocarpa, Helietta apiculata, and Machaerium paraguariense as indicator species. A higher proportion of climax light-demanding individuals was reported in the Middle Stage and Altered Forest groups, contrasting with the Advanced Stage group, in which climax shade-tolerant species were predominant. In addition, the groups were differentiated according to their dispersion strategy, with specific syndromes occurring in each group (Middle Stage: zoochory; Advanced Stage: autochory; Altered Forest: anemochory).

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“…Pioneer species are those whose seeds germinate only in clearings and totally open canopies and receive direct solar radiation, and thereby the seedlings grow rapidly. In climax species, the seeds germinate in shaded areas and the seedling show moderate and slow growth Secondary data reported by Abreu et al (2014), Carvalho (2006), Lorenzi (2002, and Ressel et al (2004) were also used in this classification process.…”

Section: Methodsmentioning

confidence: 99%

Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

Miguel

Rezende

Leal

et al. 2017

SCA

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This objective of this study was to characterize the floristic, structural, and ecological groups and to estimate the arboreal volume and biomass of a cerradão site in Palmas, Tocantins, Brazil. A forest inventory was conducted on 10.15 ha of the study area. Plots of 400-m 2 were used for systematic sampling. All standing trees (dead or alive) with a breast-height diameter (DHB) greater than 5 cm were identified and measured. Floristic diversity and horizontal structure were assessed using the Shannon and importance value indices, respectively. Forest vertical structure was classified into three stratata and the tree species were categorized into ecological groups. Ninety tree volumes were rigorously cubed and weighed. Fresh-and dry biomass were sampled and estimated. Mathematical models were applied and adjusted to estimate tree volume and biomass. It was observed that the species Myrcia splendens and Emmotum nitens and the families Fabaceae and Chrysobalanaceae were dominant in our study site. The pioneer (613 individuals ha -1 ) and climax (530 individuals ha -1 ) tree species group predominated. The floristic diversity index was estimated as 3.35 nats ind -1. The vertical structure analysis indicated fewer individuals in the superior stratum (13%) compared to the medium (63%) and inferior (24%) stratum. The Schumacher and Hall model showed better results with regard to estimated forest production. Forest volume and biomass estimates were 126.71 m³ ha -1 and 61.67 Mg ha -1 , respectively. The studied cerradão area had high floristic diversity and climax species predominated. Since this cerradão is in close proximity to the Amazon biome, its volume and biomass stocks were higher than those estimated for other cerradão and forest formations within the Cerrado biome. Key words: Brazil. Cerrado Biome. Forestry inventory. Ecological group. Production. ResumoO objetivo do estudo foi caracterizar a florística, a estrutura, o grupo ecológico e estimar os estoques de volume e biomassa arbórea em uma área de 10, 15 hectares de cerradão, localizado no município de Palmas, Estado do Tocantins, utilizando a amostragem sistemática com parcelas de 400 m². Foram amostradas e identificadas todas as árvores vivas e mortas em pé, com diâmetro a 1,3 metros do solo ≥ 5 cm. A diversidade florística foi avaliada pelo o índice Shannon e a estrutura horizontal pelo o Índice de Valor de Importância. Quanto a estrutura vertical, a floresta foi classificada em três estratos.

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Variações na riqueza e na diversidade de espécies arbustivas e arbóreas no período de 14 anos em uma Floresta de Vale, Mato Grosso, Brasil

Cited by 12 publications

References 47 publications

Spatial and temporal distribution of species diversity in semideciduous seasonal forests with occurrence of fire

Spatial and temporal distribution of species diversity in semideciduous seasonal forests with occurrence of fire

Floristic Differentiation of a Deciduous Seasonal Forest Tree Stratum, Jaguari, RS, Brazil

Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

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